Re: [DNSOP] Question on RRtypes in RFC 4034 Section 6.2

["Roy Arends" <[e-mail]>]

On 8 Dec 2015, at 15:09, Paul Wouters wrote:

> Hi,
>
> Section 6.2 of 4034 talks about canonicalization of the RR Form
>
> Item 3 states:
>
> 3.  if the type of the RR is NS, MD, MF, CNAME, SOA, MB, MG, MR, PTR,
>      HINFO, MINFO, MX, HINFO, RP, AFSDB, RT, SIG, PX, NXT, NAPTR, KX,
>      SRV, DNAME, A6, RRSIG, or NSEC, all uppercase US-ASCII letters in
>      the DNS names contained within the RDATA are replaced by the
>      corresponding lowercase US-ASCII letters;
>
> My questions:
>
> a) What was the purpose of listening these and not all RRtypes?
>  (It seems perhaps it wanted to say "All except A/AAAA")

These specific RR types contain a DNS name in the RDATA. Up until 
RFC3597 they might have been subject to name compression.

> b) What should be done with new RRtypes like OPENPGPKEY or SMIMA?

Nothing.

> c) Why the hell - hardcoded lists and not IANA registry?

Calm down. This is a complete set. Not to be expanded, ever. Exceptions 
to the RFC3597 rules (where the list originates) because they predate 
it.

> d) Does this need updating or an errata?

Not that I know.

Roy